Areas of fertile soil called deltas, usually （） are formed by mud deposited at the mouth of a river. A: triangular in shape B: their shape is triangular C: they have a triangular shape D: triangular shape

a worthy monument —— triangular

中国大学MOOC: The smooth triangular part at the base of bladder is called________________.

5. Besides the vertical stroke with a round tail, there is another kind of vertical stroke that has a _____ tail. A: sharp B: square C: triangular D: thick

After excuting the statement "[X,D]=eig(A)", D is（ ）. A: a scalar matrix B: an identity matrix C: a triangular matrix D: a diagonal matrix

Following ligaments are for spleen, (())<br/>() A: The<br/>gastrosplenic ligament B: The<br/>splenorenal ligament C: The<br/>right triangular ligaments D: The<br/>phrenicosplenic ligament

Following ligaments are for spleen, except () A: The<br/>gastrosplenic ligament B: The<br/>splenorenal ligament C: The<br/>right triangular ligaments D: The<br/>phrenicosplenic ligament

Which tooth has a root twice the length of the crown, and the shape of the cross section of the root is oval triangular? () A: The maxillary central incisor B: The mandibular central incisor C: The maxillary canine D: The mandibular canine E: The maxillary first premolar

Which tooth has a root twice the length of the crown, with an oval<br/>triangular shape at the cross section of the root: () A: The<br/>maxillary central incisor B: The<br/>mandibular central incisor C: The<br/>maxillary canine D: The<br/>mandibular canine E: The<br/>maxillary first premolar

Which is incorrect about the description of trigone of bladder?() A: It lies at the inner surface of fundus of bladder. B: It is a triangular area formed by two ureteric orifices and an interureteric fold. C: Its submucous layer and muscular layer are connected compactly with each other. D: It maintains smooth all the time no matter extending or contraction. E: It is the predilection site of tumor, concretion and inflammation.